Samsung — Partial refund for cancelled order

I ordered Samsung s22 along with galaxy buds, back case and travel adapter. I also selected for exchange offer while making order. After exchange discount my order total became ₹43, 546 which I paid using my credit card. Later I cancelled earlier mentioned order due to exchange phone damage. After 2 days I got refund credit message to my credit card and when I checked message I found that they refunded partial amount of ₹42, 675. I raised a complaint with Samsung customer care immediately but didn’t received any solution yet. Please help me to get my remaining refund amount ASAP.

Order date: 16th March 2022
Order cancelled date: 18th March 2022
Refund received date: 19th March 2022
Complaint raised date for partial refund: 19th March 2022